Machine for manufacturing tubular fabric



Feb. 20, 1934. c. sERY.

FiledrDec. 15. 1930 I MACHIN FOR MANUFACTURING TUBULAR FABRIC 's sheets-sheet 1 Fe. 20, 1934. c. sERY MACHINE FOR MANUFACTURING TUBULAR FABRIC l Fileanec. 15, 1930 s sheets-sheet 2 Feb. 20, 1934. c. sERY MACHINE FOR MANFAGTURING TUB'JLAR FABRIC 1930 5 Sheets-Sheet 5 Filed Dec. 15

Patented Feb. 20, 1934 UNITED STATES lPixrEN'r OFFICE Claude Sry, Aix-en-Provence, France, assigner to Societe a Responsablite limitee Etablissements Rotatiss, Paris, France, a company of France Application December 15, 1930, Serial No. 502,505, and in France December 26, 1929 s claims. (c1. :s6-7) I The invention relates to a machine for producing tubular fabrics. This machine is a highspeed .circular weaving loom of the kind described in U. S. patent application No. 342,198

6 led February 23, 1929 for Circular weaving looms; but the warp bobbins are arranged to rotate around the loom axis with a speed different from the spring of the shuttles.

In the preferred construction, the warp bobbins rotate around the loom axis in a direction contrary to the rotation of the shuttles and at a much reduced speed. The shuttles are reduced in number with respect to the warp bobbins. .Thus a fabric is obtained in which a great number of Warp threads are wound around the core according to a very long pitch, while a reduced number of weft threads are wound in the opposite direction according to a low pitch. The covering is in fact formed by the warp threads which are held together by the weft threads.

In the annexed drawings:

, Fig. 1 is a front view of the loom.

Fig. 2 is a side view of the same.

Fig. 3 is a plan view of the same.

Fig. 4 is a horizontal section through line IV-IV (Fig. 5).

Fig. 5 is an enlarged partial section of Fig. 1 through line V--V.

Figs. 6 and 7 are enlarged partial sections of Fig. 3 through lines VI-VI and VII--VIL Figs. 8 and 9 show tubular fabrics according to the invention.

The loom is supported by legs 1 united together by means of stays 2 and which support a casing 3.

Casing 3 carries a central vertical shaft 4 secured at its vlower end by means of a conical sleeve and provided with a nut 5 and counternut 6 (Fig. 5). A cup 7 is rotatably disposed on shaft 4, the weight of said cup being supported 'by a range of balls 8 which roll on the bottom of casing 3. A second range of balls 9 is disposed 'under the upper head of shaft 4 to vertically maintain member 7.

Cup 7 carries at its upper central end a member 11 in the form of a mushroom with turnedup rim. It also carries an "exterior horizontal ange 12 which supports the fixed spindles 13 for the warp bobbins 14. The shuttle track is formed of the turned-up rim of member 11 and of a crown 15, co-axial with the loom and integral with cup 7. This rim and crown 15 are therefore provided with a circular groove into which slidably fit the lateral shoes 16 of the shuttles 17.

The shuttle-driving member is a plate 18 loose on the hub of -cup 7 by which it is supported through a thrust ball-bearing 21 and a cylindrical ball-bearing 19. Plate 18 rotatably carries the individual driving shafts 22, each one of the latter being supported by a ball joint 23 and at its inner end by a block `24 upwardly loaded by a spring 25. Each shaft 22 is provided, at its outer end, with a roller 26 and, at its middle part, with a friction cone 27 which cooperates with a conical friction crown 28 providedv on the lower face of member 11.

The shuttles (two in number in the loom represented) are in the form of plates 17 provided with lateral sliding shoes 16. They are provided at their rear, with a freely rotatable roller 29 adapted to be actuated hy the correspending roller 26. The ratio of the friction gearing 27--28 is such that the warp threads caught in succession between rollers 26 and 29 are not substantially angularly displaced around the loom axis. Each shuttle is provided at its front with a second freely rotatable roller 31; when the loom is suddenly stopped, this vroller 31 contacts with the driving roller 26 of the preceding shuttle thus maintaining the former shuttle at its correct position. i

In Fig. 3, the driving mechanisms 22-26 have been omitted to make the drawing clearer.

The loom illustrated comprises eight Warp bobbins rotatably supportedby spindles 13, the latter being carried byflange 12. -Each warp thread (Figs. 5and1'6) frictionsvagainst a xed rod 32 and is guided in a thread guide 33 formed at the free end of a steel wire 34 having its other end coiled as a spring andA fixed to an angle iron 35 'which is itself secured f-to flange 12. The

steel wire 34 is actuated' by a'rod 36 Vvertically slidable in flange 12 and' itself actuated by a fixed undulated circular cam 37. A spring 38 presses the head 39 of rod 36 yagainst said cam 37.

The warp threads --ha've been omitted from 100 Figs. l, 2 and 6.' These threads run under or over Athe shuttles 17 and they are `Wound around the core 42 which is fed upwardly from the axial bore of shafty 4. Crown l5'and the turned-up rim of member l1 are lprovided with appropri- 105 ate vertical slits to accommodate said Warp threads.

The weft threads `run from weft pirns 43 and they are also wound around core 42 but in the reverse 'direction with respect to the warp 110 threads. These weft threads have been omitted froml Figs. 3 and 5.

Cup 7 and plate 18 are driven in opposite directions and at different speeds by means of a driving shaft 44 which is provided with the driving pulley 45 driven by a motor 46 through a belt 47 (Figs. 1 to 3). This shaft 44 (Fig. 5) carries within casing 3 a worm 48 which cooperates with a toothed crown 49 integral with cup 7. Bearings 51 are provided to support shaft 48 (Fig. 4). Cup 7 rotatably supports two vertical shafts 52 (Figs. 4 and 5), the ends of which are provided with toothed pinions 53 and 54. The lower pinions 53 mesh with a xed toothed crown 55 secured onto the bottom of casing 3 while the upper pinions 54, located Within cup 7 and larger in diameter than pinions 53, mesh with a toothed pinion 56 integral with the hub of plate 18. The arrows of Fig. 4 clearly show the directions of rotation of the parts. Plate 18 rotates inversely of cup 7 and at a much higher speed.

Rods 36 rotate around the loom axis together with cup 7 and their lower heads 39 follow the prole of cam 37 which is fixed to casing 3. The thread guides 33 are thus oscillated and insure a correct shedding of the warp.

The loom (Figs. 1, 2 and 3) also comprises two vertical pillars 57, which support two brackets 58 carrying a xed horizontal shaft 59. A drum 61, loose on said shaft, is used as driving drum for the covered core. Pillars 57 rotatably support a shaft 62 on which is keyed a pinion 63 in mesh with a toothed wheel 64 fixed to drum 61. Shaft 62 also carries a removable pinion 65. There is provided behind shaft 62 another short shaft 66 having also a removable pinion 67. Pinions 65 and -67 are connected by means of a third pinion 68 loose on a shaft which is a ustab1e in position.

Shaft 66 is also provided with a chain-wheel 69 and the latter is connected, through a chain 71 (omitted in Fig. 3), with a sprocket 72 keyed on a shaft 73 located behind casing 3 where it is supported by bearings 74 and 75 (Fig. 4). Shaft 73 is driven through bevel gears 76-77 by a speed-reducing set 78. The driving shaft 79 of this set carries a pulley 80 which is connected by' a. belt 81 with a pulley 82 keyedr on the end of shaft 44.

Two rings 83 are xed on shaft 59 and they support two horizontal rods 84 the free ends of which are connected by a cross-bar 85 provided with an horizontally-elongated opening 86. A slide 88 with tail 89 (Fig. 3) is adjustably xed in opening 86 by a fly-nut 87. Tail 89 acts as a guide for the covered core on the slightly conical driving drum 61. Theangular speed of the drum being constant, the linear speed of the covered core may be adjusted by adjusting the position of tail 89.

Rings 83 also carry two obliquely depending rods 92 .which support a stay 93 provided with a nozzle 94 (Figs. 1, 2 and 5). The latter is a short tube through which the covered core is run, the weave beingexactly made at the en.

" said irons. Two 101. keyed by pins 102 on shaft 62 (Fig. 1).

ingaan maintain shaft 98. .The latter carries a V- shaped pulley 103 braked by a rope 104 xed to the frame at 105 and loaded with a. weight 106.

sA second drum 107 is used to wind the covered core 91. This drum is identical with drum 97 and is also keyed on a shaft 108 supported by two inclined irons 109 and maintained by shoes 110 keyed by pins 111. Shaft 108 also carries a V-shaped pulley 112. The latter is driven by a rope 113v from a pulley 114 keyed The casing is pierced at 115 (Figs. 3 and 4) for rope 113.

A guide is provided to insure a correct winding of the covered core 91 on drum 107. This guide is in the form of a pulley 116 (Fig. 7) rotatably supported by a member 117 loose on shaft 73 on which it can slide. This member has a tail 118 provided with a projection 119 which ts into the grooves of a screw 121 having two threads of opposite direction. Screw 121 is keyed on a shaft 122 (Fig. 2) parallel with shaft 73 and driven by means of a pulley 123. Thelatter is connected through a string 124 with a pulley 125 which lis fixed at one end of shaft 107. When screw 121 rotates, projection 119 and pulley 116 are given a reciprocating motion which insures the correct winding of .the covered core. l

The loom works as follows:

The warp bobbins 14 rotate slowly anticlockwise (Fig. 3) and the shuttles rotate in the reverse direction at a much higher speed. The

core is driven by drum 61. The fabric of Fig. 9 is thus obtained. The warp threads' 41 constitute a wound covering with a long pitch, said covering being regularly woven with the weft threads 126. This kind of covering is very satisfactory. It is also very cheap since, save the weft of small importance it comprises but a single layer of threads.

The number of shuttles being reduced, the speed of the loom may be high.

The machine may be modified 4to comprise a large number of shuttles adapted to rotate at a low speed in cooperation with a small number of warp bobbins rotating at a high speed in the reverse direction, or the shuttles and warp bobbins may rotate in the same direction provided the speeds of rotation are different, in this latter case a different type of thread arrangement in the tubular fabric would be obtained.

The inner shoe of the shuttles could be omitted whereby the latter would be guided only by crown 11 onto which they would be maintained by centrifugal force. With such an ar rangement the friction crown 28 would be carried by the walls of cup 7.

I claim:

1. A circular `weaving loom adapted to cover such cores as electric wires and the like, comprising in combination a rotatable warp-supporting member co-axial with the loom; a shuttle track co-axialy with the loom; shuttles on said track; means to shed the warp threads; means to feed the core to be covered along the axis of the loom; means to drive said shuttles to rotate them around the axis of the loom; and means to connect said rotatable warp-supporting member with said shuttle-driving means so that the angular speed of said warp-supporting member in its direction of rotation is substantially different from the angular speed of said shuttles in their direction of rotation.

2. A circular weaving loom adapted to cover such cores as electric wires and the like, comprising in combination a rotatable 'warp-supporting member co-axial with the loom, said member being adapted to accommodate a number of warp-threads; a shuttle trackcoaxial with the loom; shuttles on said track, the number of said shuttles being dilferent from the number of said warp threads; means to shed the warp threads; means to drive said shuttles to rotate them around the axis of the loom; means to feed the core to be covered along the axis ofthe loom; and means to connect said rotatable wary-supporting member with said shuttlefdriving means so that the ratio of the angular speed of said warp-supporting member in its direction of rotation, to the angular speed of said shuttles in their direction of rotation, is equal to the ratio of the number of shuttles to the number of warp threads. f

3. A circular weaving loom as claimed in claim 2, wherein the number of shuttles is materially lower than the number of warp threads.

4. A circular Weaving loom adapted to cover such cores as electric wires and the like, comprising in combination a rotatable warp-supporting member co-axial with the loom; a shuttle track co-axial with the loom; shuttles on said track; means to shed the warp threads; means to feed the core to be covered along the axis of of the loom; means to drive said shuttles to rotate them around the axis of the loom; and means to connect said rotatable warp-supporting member with said shuttle-driving means so that said shuttles rotate ina direction opposite to the direction of rotation of said warp-supporting member, the angular speed of said warp-supporting member in its direction of rotation being substantially different from the angular speed of said shuttles in their direction of rotation.

5. A circular weaving loom adapted to cover such cores as electric wires and the like, comprising in combination a rotatable Warp-Supporting member co-axial with the loom, said member being adapted to accommodate a number of warp threads; a shuttle track co-axial' with the loom; shuttles on said track, the number of said shuttles being different from the number of said warp threads; .means to shed the warp threads; means to drive said shuttles to rotate them around the axis of the loom; means to feed the core to be covered along the axis of the loom; and means to connect said rotatable warp-supporting member with said shuttle-driving means so that said shuttles rotate in a direction opposite to. the direction of rotation of said Warp-supporting member, the ratio of the angular speed of said warp-supporting member in its direction of rotation, to the angular speed of said shuttles in their direction of rotation, being equal to the ratio ofthe number of shuttles to the number of warp threads.

.6. A circular weaving loom aslclaimed in claim 5, wherein the number of shuttles is materially lower than the number of warp threads.

7. A circular weaving loom of the kind claimed in claim 1, comprising in combination a cupshaped warp-supporting member co-'axial with the loom and provided with a central upwardly proecting hub; a shuttle track wholly supported by said member, said track comprising an outer shuttle guide directly fixed to the rim of said member, and an inner shuttle guide xed to the upper portion of the hub of said member; shuttles on said track; means to shed the warp threads; means to feed the core to be covered along the axis of the loom; means to drive the shuttles, said means embodying a shuttle-driving member rotatable around the hub of'said cupshaped warp-supporting member below the innershuttle guide of said shuttle track; a xed gear wheel co-axial with the loom and located below said cup-shaped warp-supporting member; a gear wheel co-axial with the loom and keyed on said shuttle-driving member within said Warp-supporting member; and planetary gearings supported by said warp-supporting member and in mesh with said rst-named and said second-named gear wheels.

8. A circular weaving loom of the kind claimed threads; means to feed the core to be covered lalong the axis of the loom; means to drive the shuttles, said means embodying a shuttle driving member rotatable around the hub of said cupshaped warp-supporting member below the inner shuttle guide of said shuttle track; a fixed gear wheel co-axial with the loom and located below said cup-shaped warp-supporting member; a gear wheel co-axial with the loom and keyed on said Vshuttle-driving member within said warp-supporting member; shafts rotatably supported by said warp-supporting member and traversing the bottom of the same; gears keyed on/said shafts below the bottom of said warpsupporting member, said gears being in mesh with said first-named gear wheel; and gears keyed on said shafts within said warp-supporting member and in mesh with said secondnamed gear wheel.

' CLAUDE SRY. 

